TUESDAY, May 22, 2018 -- For some people who struggle with weight gain, their body's responses to delicious food may be working against them.

In a new study, obese people who had trouble keeping weight loss at bay salivated more and had a steeper increase in their heart rate when presented with a tempting pizza, compared to folks without such struggles.

TUESDAY, May 22, 2018 -- If current trends continue, nearly one-quarter of the world's population will be obese by 2045. And one in eight people will have type 2 diabetes, new research suggests.

Alongside those bulging waistlines, global rates of type 2 diabetes will jump from 9 percent to 12 percent over the next 27 years, placing an even greater burden on already strained health systems, scientists in Denmark and England reported.

WEDNESDAY, May 23, 2018 -- There's preliminary research suggesting that abuse or neglect in childhood might have an effect on the quality of a man's sperm.

The study was small and can't prove cause and effect. But researchers at Tufts University School of Medicine in Boston say it points to a way in which stress early in a man's life might be passed on to his children.

WEDNESDAY, May 23, 2018 -- When you fire up the grill for your Memorial Day cookout, beware: Those tantalizing aromas hold an underestimated health risk.

Grilling meats at a high temperature can produce cancer-causing compounds called polycyclic aromatic hydrocarbons (PAHs). You can be exposed to significant PAH levels simply by breathing in the sweet scent of barbecue.